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819 Striker Ave Ste 8 <br /> rnto,CA5834 <br /> Sequoia Sacram(916)921996M <br /> I!DFAX(916)921-0100 <br /> Analytical www.sequoialabs.com <br /> Gettler-Ryan-Dublin Project: Former Unocal 01877 Stockton,CA S306049 <br /> 6747 Sierra Court,Ste.J Project Number: N/A Reported: <br /> Dublin CA,94568 Project Manager: Deanna L.Harding 06/16/03 15:43 <br /> Gasoline (2-Methylpentane to 1,2,4-Trimethylbenzene) and BTEX by EPA 8015M and 8021B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyta Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> U-9(S30604_8-10)Water Sampled: 05/29/03 12:40 Received: 06/02/0313:40 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 3060085 06/06/03 06/06/03 EPA 8015/8021 <br /> Benzene ND 0.50 <br /> Toluene ND 0.50 " <br /> Ethylbenzene ND 0.50 <br /> Xylenes(total) ND 0.50 <br /> Methyl tert-butyl ether ND 2.0 <br /> Surrogate:a,a,a-Trifluorotoluene 80% 60-140 <br /> U-10 S306048-11 Water Sam led:05/29/03 09:20 Received:06/02/0313:40 <br /> Purgeable Hydrocarbons 140 50 ug/1 1 3060085 06/06/03 06/06/03 EPA 8015/8021 <br /> Benzene 1.5 0.50 " •' " <br /> Toluene 1.4 0.50 <br /> Ethylbenzene ND 0.50 <br /> Xylenes(total) 1.6 0.50 <br /> Methyl tert-butyl ether 4.9 2.0 <br /> Surrogate:a,a,a-Trifluorotoluene 92% 60-140 " <br /> U-11 S306048-12 Water Sampled:05/28/03 08:25 Received:06102/0313:40 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 3060103 06/06/03 06/06/03 EPA 8015/8021 <br /> Benzene ND 0.50 <br /> Toluene ND 0.50 <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 <br /> Methyl tert-butyl ether ND 2.0 <br /> Surrogate:a,a,a-Trifluarotoluene 83% 60-140 " <br /> The results in this report apply to the samples analyzed in accordance with the chain o <br /> Sequoia Analytical-Sacramento <br /> custody document.Unless otherwise stated,results are reported on a wet weight basis. <br /> This analytical report must be reproduced in its entirety. <br /> Page 7 of 32 <br />